APA-čujuhus (7. p.)

Huang, Y. (1990). The effects of precipitation of calcium carbonate on soil pH following urea application.

Chicago-čujuhus (17. p.)

Huang, Y. The Effects of Precipitation of Calcium Carbonate on Soil PH Following Urea Application. 1990.

MLA-čujuhus (9. p.)

Huang, Y. The Effects of Precipitation of Calcium Carbonate on Soil PH Following Urea Application. 1990.

Muitte dárkkistit čujuhemiid riektatvuođa, ovdal go geavahat daid iežat deavsttas.